Do any of you guys who reload for the AR know where to find load data for the 5.56NATO round? I have some surplus powder which I'm supposed to use H335 data to load with, I have a Speer and a Sierra load manual, I just picked up the Sierra tonight cuz my buddy told me it has a section in it for ARs, but that section is pretty disappointing, it seems to have loads that are reduced under the loads for the 223 Remington which are recommended for bolt actions in that manual. I see online Ramshot has their data and they have a section for NATO rated rifles, they can push a 62gr bullet just as fast as the max loads in my books with the 55gr. Is there such a big difference in the wall thickness of the Military brass that it decreases the internal capacity of the shell enough to create an extra 8000lbs of pressure with the same size load? I didn't think there was that much difference in the case capacity.